Helmet chin curtain



FIG. 1 is a perspective view taken from a front, left side of a helmetchin curtain according to a first embodiment of our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view taken from a front, left side of a helmetchin curtain according to a second embodiment of our design;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a top view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines depicting a helmet in FIGS. 1 and 8 representenvironmental subject matter that forms no part of the claimed design.In the first embodiment, broken lines depict portions of the helmet chincurtain that form no part of the claimed design.

CLAIM The ornamental design for a helmet chin curtain, as shown anddescribed.